US3952379A - Automatically locking slider - Google Patents

Automatically locking slider Download PDF

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Publication number
US3952379A
US3952379A US05/535,103 US53510374A US3952379A US 3952379 A US3952379 A US 3952379A US 53510374 A US53510374 A US 53510374A US 3952379 A US3952379 A US 3952379A
Authority
US
United States
Prior art keywords
leaf spring
slider body
locking
slider
locking leaf
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/535,103
Other languages
English (en)
Inventor
Takeo Fukuroi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YKK Corp
Original Assignee
Yoshida Kogyo KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yoshida Kogyo KK filed Critical Yoshida Kogyo KK
Application granted granted Critical
Publication of US3952379A publication Critical patent/US3952379A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A44B19/26—Sliders
    • A44B19/30—Sliders with means for locking in position
    • A44B19/306—Sliders with means for locking in position in the form of a locking spring member actuated by the pull member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/25—Zipper or required component thereof
    • Y10T24/2561—Slider having specific configuration, construction, adaptation, or material
    • Y10T24/2566—Slider having specific configuration, construction, adaptation, or material including position locking-means attached thereto
    • Y10T24/257—Slider having specific configuration, construction, adaptation, or material including position locking-means attached thereto having surface engaging element shifted by reorientation of pull tab
    • Y10T24/2571—Resilient or spring biased element
    • Y10T24/2579—Resilient or spring biased element having aperture cooperating with guide post

Definitions

  • This invention relates generally to slide fasteners and in particular to an automatically locking slider for slide fasteners. Still more particularly, the invention concerns an automatic slider lock mechanism of the type including a leaf spring with a locking pawl at one end thereof which normally projects into the guide channel in the slider body to lock the slider against movement on a pair of fastener stringers and which retracts therefrom to unlock the slider when a pull is exerted on the pull tab of the slider.
  • the locking leaf spring has heretofore been supported substantially at its mid-point by suitable means mounted more or less centrally on the top wing of the slider body with respect to its longitudinal dimension. According to this prior art arrangement, the locking leaf spring is relatively easy to be displaced or deformed when twisted by the application of crosswise pulling forces to the pull tab. The mechanism will then be unable to lock the slider properly on a pair of fastener stringers.
  • the prior art slider lock mechanism is also objectionable in that the curved portion of its locking leaf spring, which portion is the principal part lending the desired resiliency to the spring, is located too close to the point on the locking leaf spring where the pull tab of the slider is pivotally connected thereto.
  • the curved spring portion thus arranged with respect to the slider pull tab is directly subjected to high stresses resulting from the exertion of endwise or crosswise pulling forces on the pull tab. This can significantly shorten the service life of the locking leaf spring and of the slider itself.
  • Another object of the invention is to provide an automatic slider lock mechanism including a locking leaf spring which is so configured and arranged with respect to the body and the pull tab of the slider that it will serve its intended purposes efficiently in spite of the various stresses that may be applied thereto throughout the life expectation of the slide fastener.
  • this invention provides, in a fastener slider of the well known type, an automatic lock mechanism including a locking leaf spring arranged longitudinally over the top wing of the slider body and having one end secured to the front end of the slider body, in such a manner that the locking leaf spring is yieldably urged against the slider body.
  • the locking leaf spring comprises a pair of shoulders intermediate both ends thereof which are adapted to be engaged by a pair of spring retainers, respectively, projecting upwardly from the top wing of the slider body, an elongate neck extending between the shoulders and the said one end thereof, and a locking pawl at the other end of the leaf spring which normally projects into the slider body to engage the rows of interlocking fastener elements along which the slider is intended to move to open or close the fastener.
  • the pull tab of the slider surrounds at one end the locking leaf spring at its portion between the shoulders and the locking pawl, in such a manner that the locking pawl retracts from within the slider body only when a pull is being exerted on the pull tab.
  • FIG. 1 is a perspective view of an automatically locking slider for slide fasteners constructed in accordance with the novel concepts of this invention, in which the pull tab is shown fragmentarily to facilitate the illustration;
  • FIG. 2 is a top plan view of the slider shown in FIG. 1;
  • FIG. 3 is the right hand slide elevational view of the slider as shown in FIG. 2;
  • FIG. 4 is a view similar to FIG. 3 but explanatory of the way the slider is unlocked upon exertion of a pull on its pull tab.
  • the slider body 10 has a flared front end 12 and a contracted rear end 13 and is composed of a top wing 14 and a bottom wing 15 which are interconnected by a web 16 located centrally at the flared front end 12.
  • the usual Y-shaped guide channel is thus formed through the slider body 10 to permit rows of interlocking fastener elements, not shown, to pass therethrough as the slider is moved along the fastener elements to open or close the slide fasteners.
  • the automatic lock mechanism includes a locking leaf spring 17 generally arranged longitudinally over the top wing 14 of the slider body 10. Projecting upwardly from the top wing 14 of the slider body 10 are a pair of transversely spaced spring retainers 18, which are located rather closer to the flared front end 12 of the slider body than to its contracted rear end, and a stop 19 which is located centrally adjacent the contracted rear end of the slider body.
  • the locking leaf spring 17 is operatively mounted on the top wing 14 by having its pair of shoulders 20, formed intermediate both ends thereof, held under the respective spring retainers 18 and by relatively loosely receiving the stop 19 in an aperture 21 formed adjacent the rear end of the leaf spring.
  • the locking leaf spring 17 has a raised portion 22 between its shoulders 20 and aperture 21. There is arranged between this raised portion 22 of the locking leaf spring 17 and the top wing 14 of the slider body 10 a relatively flat pin 23 extending between a pair of prongs 24 at the bifurcated end of the pull tab 11.
  • the locking leaf spring 17 has an elongate neck 25 extending forwardly of the shoulders 20 and arranged between the pair of spring retainers 18.
  • the neck 25 has a curved portion 26, which is the principal part imparting the desired resiliency to the locking leaf spring 17, located centrally at the flared front end 12 of the slider body 10 and extends downwardly therefrom into a groove 27 formed in the web 16 of the slider body.
  • the front end portion 28 of the locking leaf spring is clamped and securely retained in the groove 27, in such a manner that the leaf spring is urged against the slider body 10.
  • the locking leaf spring 17 terminates in a locking pawl 29 which projects downwardly into the guide channel of the slider body 10 via an aperture 30 formed in its top wing 14.
  • the locking leaf spring 17 as a whole is so mounted on the slider body 10 that the locking pawl 29 is biased downwardly into the guide channel of the slider body.
  • the upward motion of the locking pawl 29, when a pull is exerted on the pull tab 11, is limited by the stop 19 received in the aperture 21 of the locking leaf spring 17.
  • the mid-portion of the locking leaf spring 17 is also prevented from being lifted too far away from the slider body 10 by the pair of spring retainers 18 engaging the respective leaf spring shoulders 20.
  • the locking leaf spring 17 of the improved automatic slider lock mechanism according to the invention will definitely maintain its correct attitude on the slider body 10 even when strong torsional or crosswise forces are applied to the slider pull tab 11, because the spring is supported by and between the pair of spring retainers 18 practically against any possibility of twisting or of lateral displacement.
  • the curved spring portion 26 is located adjacent the distal end of the elongate neck 25 extending from the pair of shoulders 20 which are engaged by the respective spring retainers 18, this curved portion is to be stressed by no greater pulling force exerted on the slider pull tab 11 than that necessary to cause the locking pawl 29 to retract to a desired degree out of the guide channel of the slider body. It will therefore be seen that the spring retainers 18 also serve to protect the curved spring portion 26 from the effects of any unnecessarily great pull on the slider pull tab 11.
  • the slider equipped with the automatic lock mechanism according to the invention will therefore function efficiently for an extended length of time in spite of the possible severe working conditions to which it may be subjected in the use of the complete slide fastener.

Landscapes

  • Slide Fasteners (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US05/535,103 1973-12-29 1974-12-20 Automatically locking slider Expired - Lifetime US3952379A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1974004185U JPS5443841Y2 (zh) 1973-12-29 1973-12-29
JA49-4185[U] 1973-12-29

Publications (1)

Publication Number Publication Date
US3952379A true US3952379A (en) 1976-04-27

Family

ID=11577635

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/535,103 Expired - Lifetime US3952379A (en) 1973-12-29 1974-12-20 Automatically locking slider

Country Status (13)

Country Link
US (1) US3952379A (zh)
JP (1) JPS5443841Y2 (zh)
BE (1) BE823925A (zh)
BR (1) BR7410979D0 (zh)
CA (1) CA1016726A (zh)
CH (1) CH576758A5 (zh)
DE (1) DE2461034C3 (zh)
ES (1) ES208980Y (zh)
FR (1) FR2255864B1 (zh)
GB (1) GB1462669A (zh)
HK (1) HK36678A (zh)
IT (1) IT1027200B (zh)
NL (1) NL7416570A (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041578A (en) * 1975-11-14 1977-08-16 Yoshida Kogyo K.K. Automatic lock slider for slide fasteners
US4395891A (en) * 1980-10-09 1983-08-02 Presto Lock, Inc. Zipper slider latching assembly
US4422220A (en) * 1981-02-25 1983-12-27 Yoshida Kogyo K. K. Automatic lock slider for slide fasteners
US5105512A (en) * 1989-12-29 1992-04-21 Salomon S.A. Sliding closure
US20050076481A1 (en) * 2003-10-10 2005-04-14 Lin Yu Pau Zipper with a smooth pull function
USD821260S1 (en) * 2016-09-14 2018-06-26 Eric Gates Zipper slider

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2072256B (en) * 1980-03-04 1983-12-21 Yoshida Kogyo Kk Automatic lock slider for slide fasteners
MY193107A (en) * 2016-04-01 2022-09-26 Shah Tech Llc Metal one piece locking slide and pull for slide fastener
CN106263306B (zh) * 2016-08-23 2019-08-13 福建浔兴拉链科技股份有限公司 一次成型的冲压自动拉头

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657445A (en) * 1949-05-24 1953-11-03 Aero Zipp Fasteners Ltd Slider for slide fasteners
US2799070A (en) * 1952-02-18 1957-07-16 Aero Zipp Fasteners Ltd Sliders for sliding clasp fasteners
GB821650A (en) * 1955-09-19 1959-10-14 Talon Inc Improvements in or relating to automatic lock slider for slide fastenings
US2913795A (en) * 1955-09-19 1959-11-24 Talon Inc Automatic lock slider for slide fasteners
US2978772A (en) * 1958-06-09 1961-04-11 Talon Inc Automatic lock slider for slide fasteners
US2993253A (en) * 1958-07-16 1961-07-25 Talon Inc Automatic lock slider for slide fasteners
US3016592A (en) * 1959-05-12 1962-01-16 Talon Inc Automatic lock slider for slide fasteners
US3038228A (en) * 1959-04-21 1962-06-12 Talon Inc Automatic lock slider for slide fasteners
US3038226A (en) * 1960-06-16 1962-06-12 Talon Inc Automatic lock slider
US3045307A (en) * 1959-03-04 1962-07-24 Talon Inc Automatic lock slider for slide fasteners
US3129480A (en) * 1963-02-28 1964-04-21 Talon Inc Automatic lock slider

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657445A (en) * 1949-05-24 1953-11-03 Aero Zipp Fasteners Ltd Slider for slide fasteners
US2799070A (en) * 1952-02-18 1957-07-16 Aero Zipp Fasteners Ltd Sliders for sliding clasp fasteners
GB821650A (en) * 1955-09-19 1959-10-14 Talon Inc Improvements in or relating to automatic lock slider for slide fastenings
US2913795A (en) * 1955-09-19 1959-11-24 Talon Inc Automatic lock slider for slide fasteners
US2978772A (en) * 1958-06-09 1961-04-11 Talon Inc Automatic lock slider for slide fasteners
US2993253A (en) * 1958-07-16 1961-07-25 Talon Inc Automatic lock slider for slide fasteners
US3045307A (en) * 1959-03-04 1962-07-24 Talon Inc Automatic lock slider for slide fasteners
US3038228A (en) * 1959-04-21 1962-06-12 Talon Inc Automatic lock slider for slide fasteners
US3016592A (en) * 1959-05-12 1962-01-16 Talon Inc Automatic lock slider for slide fasteners
US3038226A (en) * 1960-06-16 1962-06-12 Talon Inc Automatic lock slider
US3129480A (en) * 1963-02-28 1964-04-21 Talon Inc Automatic lock slider

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041578A (en) * 1975-11-14 1977-08-16 Yoshida Kogyo K.K. Automatic lock slider for slide fasteners
US4395891A (en) * 1980-10-09 1983-08-02 Presto Lock, Inc. Zipper slider latching assembly
US4422220A (en) * 1981-02-25 1983-12-27 Yoshida Kogyo K. K. Automatic lock slider for slide fasteners
US5105512A (en) * 1989-12-29 1992-04-21 Salomon S.A. Sliding closure
US20050076481A1 (en) * 2003-10-10 2005-04-14 Lin Yu Pau Zipper with a smooth pull function
USD821260S1 (en) * 2016-09-14 2018-06-26 Eric Gates Zipper slider

Also Published As

Publication number Publication date
DE2461034B2 (de) 1978-12-14
FR2255864A1 (zh) 1975-07-25
IT1027200B (it) 1978-11-20
BR7410979D0 (pt) 1975-08-26
GB1462669A (en) 1977-01-26
ES208980U (es) 1976-04-01
JPS5097602U (zh) 1975-08-14
HK36678A (en) 1978-07-14
CA1016726A (en) 1977-09-06
DE2461034A1 (de) 1975-07-10
FR2255864B1 (zh) 1978-06-23
DE2461034C3 (de) 1979-08-16
ES208980Y (es) 1976-08-16
BE823925A (fr) 1975-04-16
AU7684874A (en) 1976-06-24
NL7416570A (nl) 1975-07-01
JPS5443841Y2 (zh) 1979-12-18
CH576758A5 (zh) 1976-06-30

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